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41. 发明授权

US06997610B2 Calibration of the transformation of spectral X-ray attenuation values in density and atomic number information 失效
标题翻译：校正光谱X射线衰减值在密度和原子序数信息中的变换
公开(公告)号：US06997610B2
公开(公告)日：2006-02-14
申请号：US10772241
申请日：2004-02-06
申请人： Bjoern Heismann
发明人： Bjoern Heismann
IPC分类号： G01D18/00
CPC分类号： A61B6/583 , A61B6/482 , G01N23/06 , Y10S378/901
摘要： A method is for calibration of a transformation of at least two X-ray attenuation values (which are determined using different X-ray spectra) for a material, to a value for the density and a value for the atomic number of the material. A first distribution is recorded of first X-ray attenuation values obtained from a calibration phantom using a first X-ray spectrum, and a second distribution is recorded of second X-ray attenuation values obtained from the calibration phantom using a second X-ray spectrum. The recorded X-ray attenuation values are used to produce a density function and to produce an atomic number function. A value for the density and for the atomic number of the calibration sample is determined with the aid of the density function and the atomic number function, and a discrepancy between the determined values and the actual density and atomic number of the calibration sample is found. The discrepancy is used for producing a mapping rule which changes the values determined by the density function and the atomic number function to the actual values.
摘要翻译：一种方法是用于校准材料的至少两个X射线衰减值（其使用不同的X射线光谱确定）的变换，以及材料的原子序数的值。记录使用第一X射线光谱从校准体模获得的第一X射线衰减值的第一分布，并且使用第二X射线光谱记录从校准体模获得的第二X射线衰减值的第二分布。记录的X射线衰减值用于产生密度函数并产生原子序数函数。借助于密度函数和原子序数函数确定校准样品的密度和原子序数值，并且发现确定的值与校准样品的实际密度和原子序数之间的差异。该差异用于产生将由密度函数和原子序数函数确定的值改变为实际值的映射规则。

42. 发明申请

US20060013354A1 Method for reconstructing tomograms from detector measured data of a tomography unit 审中-公开
标题翻译：从断层扫描单元的检测器测量数据重建断层图像的方法
公开(公告)号：US20060013354A1
公开(公告)日：2006-01-19
申请号：US11181734
申请日：2005-07-15
申请人： Bjoern Heismann
发明人： Bjoern Heismann
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G06T11/006 , A61B6/027 , A61B6/032 , A61B6/482 , G06T2211/408 , G06T2211/424
摘要： A reconstruction method is used in computed tomography, wherein an examination object is scanned with a beam that rotates during scanning about a system axis. In the method, firstly the absorption coefficients of subvolumes relatively remote from the system axis are determined. Subsequently the absorption coefficients of the subvolumes situated relatively nearer to the system axis are determined iteratively, taking account of the absorption coefficients already calculated.
摘要翻译：在计算机断层摄影中使用重建方法，其中使用在围绕系统轴的扫描期间旋转的光束扫描检查对象。在该方法中，首先确定相对远离系统轴的子体积的吸收系数。随后，考虑到已经计算的吸收系数，迭代地确定位于相对更靠近系统轴的子体积的吸收系数。

43. 发明申请

US20050084063A1 Method and device for determining the type of fluid in a fluid mass in an object 有权
标题翻译：用于确定物体中的流体质量中的流体类型的方法和装置
公开(公告)号：US20050084063A1
公开(公告)日：2005-04-21
申请号：US10964916
申请日：2004-10-15
申请人： Bjoern Heismann , Andreas Mahnken
发明人： Bjoern Heismann , Andreas Mahnken
IPC分类号： A61B6/00 , A61B6/03 , G01N23/06
CPC分类号： A61B6/508 , A61B6/032 , A61B6/482 , A61B6/50 , A61B6/505 , A61B6/583
摘要： A method and a device are proposed for determining the type of fluid in a fluid mass in an object. X-ray attenuation data is supplied from one or a plurality of X-ray recordings of an object area including the fluid mass in the object, which were acquired with at least two different X-ray spectra or detector weightings. The X-ray attenuation data is used to determine values for effective atomic number and density for the fluid mass and average these to obtain a mean value for effective atomic number and density for the fluid mass. Comparison data is also supplied, which indicates fluctuation ranges for combinations of effective atomic number and density for different types of fluid. The mean values for effective atomic number and density of the fluid mass are compared with the comparison data to determine the fluctuation range and thereby the type of fluid, into which the two mean values fall. The method and associated device can be used to determine the type of fluid in a fluid mass in an object in a reliable and unambiguous manner.
摘要翻译：提出了一种用于确定物体中的流体质量中的流体类型的方法和装置。 X射线衰减数据从包含物体中的流体质量的物体区域的一个或多个X射线记录提供，该X射线记录用至少两个不同的X射线光谱或检测器加权获得。 X射线衰减数据用于确定流体质量的有效原子数和密度的值，并且平均这些值以获得流体质量的有效原子数和密度的平均值。还提供比较数据，其指示用于不同类型的流体的有效原子数和密度的组合的波动范围。将流体质量的有效原子序数和密度的平均值与比较数据进行比较，以确定波动范围，从而确定两个平均值下降的流体类型。该方法和相关装置可用于以可靠和明确的方式确定物体中流体质量中的流体类型。

44. 发明授权

US09684048B2 Optimization of a pulse sequence for a magnetic resonance system 有权
公开(公告)号：US09684048B2
公开(公告)日：2017-06-20
申请号：US14182512
申请日：2014-02-18
申请人： David Grodzki , Bjoern Heismann
发明人： David Grodzki , Bjoern Heismann
IPC分类号： G01R33/54 , G01R33/565
CPC分类号： G01R33/543 , G01R33/56509
摘要： In a method and a pulse sequence optimization device to determine a pulse sequence for a magnetic resonance system, a pulse sequence is selected for optimization that includes a number of radio-frequency pulses and a number of gradient pulses chronologically coordinated therewith. An automatic analysis of the pulse sequence takes place to identify fixed point/time periods in the pulse sequence that are to be left unmodified, and modifiable time intervals in the pulse sequence that may be optimized. An automatic optimization of gradient pulses in the modifiable time intervals takes place according to a predetermined optimization criterion, while keeping the length of modifiable time intervals constant.

45. 发明授权

US09320454B2 Method and magnetic resonance apparatus to generate a series of MR images to monitor a position of an interventional device 有权
标题翻译：用于产生一系列MR图像以监测介入装置的位置的方法和磁共振装置
公开(公告)号：US09320454B2
公开(公告)日：2016-04-26
申请号：US13630155
申请日：2012-09-28
申请人： David Grodzki , Bjoern Heismann , Sebastian Schmidt
发明人： David Grodzki , Bjoern Heismann , Sebastian Schmidt
IPC分类号： A61B5/06 , G01R33/28 , G01R33/48 , A61B19/00 , A61B5/055
CPC分类号： A61B5/062 , A61B5/055 , A61B34/20 , A61B2034/2065 , A61B2090/374 , G01R33/286 , G01R33/4816 , G01R33/4824
摘要： In a magnetic resonance (MR) method and system to generate a series of MR images to monitor the position of an interventional device located in an examination region, radial scanning of k-space is combined with other scans, in particular for the k-space center. The measurement time until the entirety of k-space corresponding to the imaging region is scanned is thereby markedly shortened in total. The short echo times that are possible with this reduce susceptibility artifacts in the reconstructed image data and enable a depiction of tissue or substances with very short T2 values, for example plastics. Due to the rapidly repeated excitation and acquisition of measurement data and the reconstruction of image data, it is possible to monitor a position of the intervention device in the examination region.
摘要翻译：在用于产生一系列MR图像以监测位于检查区域中的介入装置的位置的磁共振（MR）方法和系统中，k空间的径向扫描与其他扫描结合，特别是与k空间中央。因此，扫描对应于成像区域的整个k空间的测量时间总共显着缩短。可能的短回波时间可以减少重建图像数据中的敏感性伪影，并且能够描绘具有非常短T2值的组织或物质，例如塑料。由于测量数据的快速反复激发和获取以及图像数据的重建，可以监视干预装置在检查区域中的位置。

46. 发明申请

US20140232397A1 DETERMINATION OF A PULSE SEQUENCE FOR A MAGNETIC RESONANCE SYSTEM 有权
标题翻译：确定磁共振系统的脉冲序列
公开(公告)号：US20140232397A1
公开(公告)日：2014-08-21
申请号：US14182538
申请日：2014-02-18
申请人： David Grodzki , Bjoern Heismann
发明人： David Grodzki , Bjoern Heismann
IPC分类号： G01R33/54
CPC分类号： G01R33/543 , G01R33/482 , G01R33/4824
摘要： In a method and a pulse sequence determination device to determine a pulse sequence for a magnetic resonance system, control protocol parameter values are initially acquired. A determination of k-space trajectory node points within k-space then takes place in a processor on the basis of the control protocol parameter values. The determination of the pulse sequence then takes place on the basis of the k-space trajectory node points. A method for operating a magnetic resonance system uses such a pulse sequence, and a magnetic resonance system embodies such a pulse sequence determination device.
摘要翻译：在确定磁共振系统的脉冲序列的方法和脉冲序列确定装置中，最初获取控制协议参数值。基于控制协议参数值，在处理器中发生k空间内的k空间轨迹节点的确定。然后，基于k空间轨迹节点进行脉冲序列的确定。用于操作磁共振系统的方法使用这样的脉冲序列，并且磁共振系统体现这样的脉冲序列确定装置。

47. 发明申请

US20130271139A1 DETERMINATION OF A CONTROL SEQUENCE FOR A MAGNETIC RESONANCE IMAGING SYSTEM 审中-公开
标题翻译：确定磁共振成像系统的控制序列
公开(公告)号：US20130271139A1
公开(公告)日：2013-10-17
申请号：US13860609
申请日：2013-04-11
申请人： David Grodzki , Bjoern Heismann
发明人： David Grodzki , Bjoern Heismann
IPC分类号： G01R33/54
CPC分类号： G01R33/543 , G01R33/3854 , G01R33/482 , G01R33/4824
摘要： In a method to determine a control sequence for a magnetic resonance imaging system in order to acquire echo signal-based raw magnetic resonance data in k-space along one or more trajectories on the basis of the control sequence, the control sequence is optimized so that, to control a gradient magnetic field for at least a predetermined portion of the control sequence, a change of an attribute of the gradient magnetic field is limited. The limitation takes place so that a momentary amplitude change rate of the gradient magnetic field falls below a predetermined amplitude change rate limit value, and/or so that a momentary direction change rate of the gradient magnetic field falls below a predetermined direction change rate limit value, and/or so that a momentary gradient change rate of the gradient magnetic field that is based on a combination of the momentary amplitude change rate and the momentary direction change rate falls below a predetermined gradient change rate limit value.
摘要翻译：在确定用于磁共振成像系统的控制序列的方法中，为了基于控制序列沿着一个或多个轨迹获取k空间中的基于回波信号的原始磁共振数据，优化控制序列，使得为了控制至少控制序列的预定部分的梯度磁场，限制了梯度磁场的属性的变化。发生限制，使得梯度磁场的瞬时振幅变化率下降到预定的振幅变化率极限值以下，和/或使得梯度磁场的瞬时方向变化率低于预定方向变化率极限值和/或使得基于瞬时幅度变化率和瞬时方向变化率的组合的梯度磁场的瞬时梯度变化率下降到预定的梯度变化率极限值以下。

48. 发明申请

US20130076357A1 METHOD AND MAGNETIC RESONANCE APPARATUS TO GENERATE A SERIES OF MR IMAGES TO MONITOR A POSITION OF AN INTERVENTIONAL DEVICE 有权
标题翻译：用于生成一系列MR图像以监测传统装置的位置的方法和磁共振装置
公开(公告)号：US20130076357A1
公开(公告)日：2013-03-28
申请号：US13630155
申请日：2012-09-28
申请人： David Grodzki , Bjoern Heismann , Sebastian Schmidt
发明人： David Grodzki , Bjoern Heismann , Sebastian Schmidt
IPC分类号： G01R33/44
CPC分类号： A61B5/062 , A61B5/055 , A61B34/20 , A61B2034/2065 , A61B2090/374 , G01R33/286 , G01R33/4816 , G01R33/4824
摘要： In a magnetic resonance (MR) method and system to generate a series of MR images to monitor the position of an interventional device located in an examination region, radial scanning of k-space is combined with other scans, in particular for the k-space center. The measurement time until the entirety of k-space corresponding to the imaging region is scanned is thereby markedly shortened in total. The short echo times that are possible with this reduce susceptibility artifacts in the reconstructed image data and enable a depiction of tissue or substances with very short T2 values, for example plastics. Due to the rapidly repeated excitation and acquisition of measurement data and the reconstruction of image data, it is possible to monitor a position of the intervention device in the examination region.
摘要翻译：在用于产生一系列MR图像以监测位于检查区域中的介入装置的位置的磁共振（MR）方法和系统中，k空间的径向扫描与其他扫描结合，特别是与k空间中央。因此，扫描对应于成像区域的整个k空间的测量时间总共显着缩短。可能的短回波时间可以减少重建图像数据中的敏感性伪影，并且能够描绘具有非常短的T2值的组织或物质，例如塑料。由于测量数据的快速反复激发和获取以及图像数据的重建，可以监视干预装置在检查区域中的位置。

49. 发明授权

US08005183B2 Computed tomography device with active adaptation of the measuring electronics 有权
标题翻译：计算机断层摄影装置具有主动适应的测量电子元件
公开(公告)号：US08005183B2
公开(公告)日：2011-08-23
申请号：US10342250
申请日：2003-01-15
申请人： Bjoern Heismann , Erhard Schlund , Karl Stierstorfer
发明人： Bjoern Heismann , Erhard Schlund , Karl Stierstorfer
IPC分类号： A61B6/00
CPC分类号： A61B6/542 , A61B6/032 , A61B6/4021 , G01N23/046 , G01N2223/419
摘要： A computed tomography device (CT device) includes a user interface, via which the standard settings characterizing the CT measurement can be performed. At the same time, in a method and a computed tomography device for carrying out this method, filtering behavior of the filter electronics is adapted to the configuration of the standard settings by the system computer.
摘要翻译：计算机断层摄影装置（CT装置）包括用户界面，通过该用户界面可以执行表征CT测量的标准设置。同时，在用于执行该方法的方法和计算机断层摄影装置中，过滤器电子器件的滤波行为适用于系统计算机对标准设置的配置。

50. 发明授权

US07728298B2 Detector bar or detector formed from a number of detector bars, and computed-tomography unit with such a detector 有权
标题翻译：由许多检测器棒形成的检测棒或检测器，以及具有这种检测器的计算机断层摄影单元
公开(公告)号：US07728298B2
公开(公告)日：2010-06-01
申请号：US11287360
申请日：2005-11-28
申请人： Bjoern Heismann
发明人： Bjoern Heismann
IPC分类号： G01T1/00
CPC分类号： G01T1/2985 , G01N23/046 , G01N2223/419 , G01T1/166 , G01T1/2928
摘要： A detector bar, a detector formed from a number of detector bars, and a computed-tomography unit including such a detector is disclosed, each detector bar being formed from a number of individual modules. A detector bar has a module carrier for mechanically retaining the individual modules, and a printed circuit board, structurally separate from the module carrier, for making electric contact with the individual modules. The individual modules can thus be exchanged without disturbance, and simple aligning of the individual modules can thus be carried out while electric contact is simultaneously made.
摘要翻译：公开了一种检测器条，由许多检测器棒形成的检测器和包括这种检测器的计算机断层摄影单元，每个检测器条由多个单独的模块形成。检测器杆具有用于机械地保持各个模块的模块载体，以及结构上与模块载体分离的印刷电路板，用于与各个模块进行电接触。因此，可以不扰乱地交换各个模块，从而可以在同时进行电接触的同时进行各个模块的简单对准。

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